WordReference Random House Unabridged Dictionary of American English © 2026
vac′uum cof′fee mak′er,
- Fooda coffee pot with upper and lower glass units, the upper for ground coffee and the lower for water that, when boiled, rises through the filter-stoppered bottom of the upper unit and remains there until drawn back down to the lower unit as brewed coffee by a reduction in pressure caused by the removal of heat.